/*
 * Copyright 2010-2011 CGT&DC ISA RAS
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package websolve.workflow.runtime;

import java.util.ArrayList;
import java.util.List;

public class AnyParameter extends Parameter {

    private List<Parameter> params = new ArrayList<Parameter>();

    public AnyParameter() {
        super();
    }

    public AnyParameter(String type) {
        super(type);
    }

    public AnyParameter addParam(Parameter param) {
        if (isCompatibleWith(param)) {
            params.add(param);
            param.incrementConsumerCount();
            return this;
        } else {
            throw new IllegalArgumentException();
        }
    }

    @Override
    public boolean isReady() {
        boolean isReady = false;
        for (Parameter param : params) {
            if (param.isReady()) {
                isReady = true;
                setValue(param.getValue());
                break;
            }
        }
        return isReady;
    }

    @Override
    public void decrementConsumerCount() {
        for (Parameter param : params) {
            param.decrementConsumerCount();
        }
    }

}
